CN106465490B - Microwave heating equipment - Google Patents
Microwave heating equipment Download PDFInfo
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- CN106465490B CN106465490B CN201580024430.XA CN201580024430A CN106465490B CN 106465490 B CN106465490 B CN 106465490B CN 201580024430 A CN201580024430 A CN 201580024430A CN 106465490 B CN106465490 B CN 106465490B
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- Prior art keywords
- microwave
- flange part
- wall surface
- side wall
- heating
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/72—Radiators or antennas
- H05B6/725—Rotatable antennas
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
- H05B6/68—Circuits for monitoring or control
- H05B6/687—Circuits for monitoring or control for cooking
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/76—Prevention of microwave leakage, e.g. door sealings
Abstract
Top surface (109) and side wall surface (110) of the rotable antenna (105a) including composition waveguide structure (108) and the flare (113) to the indoor radiated microwaves of heating.For rotable antenna (105a) there are also flange part (112), which is set to the edge of side wall surface (110) in a manner of opposed with as bottom surface (111) of the indoor wall surface of heating and surround side wall surface (110).Flange part (112) has the choke coil portion (117) inhibited to the leakage of microwave.According to this structure, the relatively low region of impedance can be generated in a manner of surrounding side wall surface (110), the directive property that can be radiated to the leakage rejection and microwave of rotable antenna (105a) is strengthened.As a result, the heating object being contained in disk a part exist be not intended to heating food in the case where, can to exist wish heat food region concentrate heating, to be not intended to heating food almost without heating.
Description
Technical field
This disclosure relates to carry out the microwave heating equipments such as the micro-wave oven of microwave heating to heating objects such as food.
Background technique
It heats the different multiple food of indoor temperature in recent years, having and starts simultaneously at heating and simultaneously to being accommodated in
The micro-wave oven of cooking function (Simultaneously-cooking function) is real while making to terminate their heating
With change.
In this while cooking function, such as in order to which the food to frozen food and room temperature state starts simultaneously at heating simultaneously
It is completed at the same time heating, compared to the food of higher temperatures, needs more strongly to heat the food compared with low temperature.The reason is that such as
Fruit equally heats them, then when the food to room temperature state heats completion, can generate and heat for frozen food
Insufficient situation.
In order to realize while cooking function, then and non-required it is uniformly heated up (hereinafter, claiming to heating indoor heating object
It is evenly heated), and (hereinafter referred to as local heating) function for needing intensively to heat the indoor a part of heating object of heating
Energy.
As the means for carrying out local heating, proposes following technology: being detected according to using infrared sensor
The temperature inside the box distribution, to heating room bottom surface (hreinafter referred to as bottom surface) substantial middle lower section configuration rotation day
The rotation and stopping of line (Antenna) are controlled (for example, referring to patent document 1,2).
In above-mentioned first technology, the rotable antenna of the directive property with the strong microwave radiation of outside property is used.To multiple
In the case that food is cooked simultaneously, by be arranged make rotable antenna towards compared with low temperature food in the state of stop when
Between section, to carry out the food compared with low temperature concentrating the control of heating.
Here, the structure as the rotable antenna for the local heating function admirable for being referred to as rotating waveguide mode, to upper
Rotable antenna disclosed in first technology is stated to be illustrated.
Figure 18 A is the front section view of existing microwave heating equipment described in patent document 1.Figure 18 B is patent document 1
The top view of the existing rotable antenna.Figure 19 A is the vertical view for indicating existing rotable antenna described in patent document 2
Figure.Figure 19 B is the top view for indicating existing others rotable antenna described in patent document 2.
As shown in Figure 18 A to Figure 19 B, rotable antenna 1a, 1b, 1c are respectively provided with waveguide structure 3a, 3b, 3c of box.
Waveguide structure 3a, 3b, 3c are configured to, surround respectively be provided to heat indoor microwave via coupling axis 2a, 2b,
2c。
Waveguide structure 3a has the side wall surface of the surrounding tripartite of the top surface 4a for being linked to coupling axis 2a and covering top surface 4a
5aa, side wall surface 5ab, side wall surface 5ac.It is provided on the outside of side wall surface 5aa, 5ab, 5ac and separates minim gap and be parallel to bottom
Flange (Flange) portion 7a that face 6 is formed.It is formed on rotable antenna 1a only to the flare 8a of a direction extensive open.
Similarly, waveguide structure 3b has the surrounding tripartite's of the top surface 4b for being linked to coupling axis 2b and covering top surface 4b
Side wall surface 5ba, side wall surface 5bb, side wall surface 5bc.Be provided on the outside of side wall surface 5ba, 5bb, 5bc separate small gap and
It is parallel to the flange part 7b of the formation of bottom surface 6.The flare 8b of the only extensive open on a direction is formed in rotable antenna 1b.
Waveguide structure 3c has the side wall surface of the top surface 4c for being linked to coupling axis 2c, the surrounding tripartite for covering top surface 4c
5ca, side wall surface 5cb, side wall surface 5cc.It is provided on the outside of side wall surface 5ca, 5cb, 5cc and separates small gap and be parallel to bottom
The flange part 7c that face 6 is formed.It is formed with only in rotable antenna 1c to the flare 8c of a direction extensive open.
According to rotable antenna 1a, 1b, 1c, the major part of microwave is radiated respectively from flare 8a, 8b, 8c, so as to mention
The directive property that height is radiated from the microwave of flare 8a, 8b, 8c.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Application 60-130094 bulletin
Patent document 2: No. 2894250 bulletins of Japanese Patent Publication No.
Summary of the invention
The purpose of above-mentioned existing microwave heating equipment is, multiple food are heated to desired temperature, therefore, even if
Purpose can also be reached in the case where heating and generating the rotable antenna of a little electric field leakage other than direction using.
However, the performance (hereinafter referred to as leakage rejection) of the leakage of the inhibition microwave of existing rotable antenna is not
Sufficiently, therefore in existing microwave heating equipment, a part of multiple food is the food for being not intended to heating, such as salad
In the case where, it is undesirable to the food of heating can be also heated.
Thus, for example in the case where the food after cooking is contained in a disk together with salad, only to the cooking
When food afterwards reheats, the food for needing would not want to heating is temporarily moved in other disks.In this way, existing microwave heating
The leakage rejection of device is insufficient, it is therefore desirable to expend labour and the time of user.
The disclosure is above-mentioned existing for solving the problems, such as, its purpose is to provide a kind of microwave heating equipments, contain in disk
In the case that a part for the heating object put has the food for being not intended to heating, have higher leakage rejection, it can
To wish heat food existing for region concentrate carry out microwave heating, to be not intended to heating food almost without heating.
Above-mentioned existing in order to solve the problems, such as, the microwave heating equipment of an aspect of this disclosure includes heating room, receives
Receive heating object；Microwave generating unit generates microwave；Rotable antenna, with waveguide structure；Driving portion makes to rotate day
Line rotation；And control unit, microwave generating unit and driving portion are controlled.
Rotable antenna include constitute waveguide structure top surface and side wall surface and by microwave emit to heating it is indoor micro-
Wave radioactive department.Rotable antenna also has flange part, and the flange part is with and encirclement side wall surface opposed with an indoor wall surface is heated
Mode be set to the edge of side wall surface.Flange part has the choke coil portion inhibited to the leakage of microwave.
According to present aspect, the region with relatively low impedance can be generated in a manner of the edge for surrounding side wall surface.
Thereby, it is possible to strengthen the directive property of the leakage rejection in choke coil portion and microwave radiation.As a result, the quilt held in disk
In the case that a part of heating object has the food for being not intended to heat, the region in the presence of the food for wishing to heat is concentrated and is added
Heat can not heat the food for being not intended to heating as far as possible.
Detailed description of the invention
Fig. 1 is the block diagram comprising front section view of the microwave heating equipment of the 1st embodiment.
Fig. 2 is the overhead sectional view viewed from above of the microwave heating equipment of the 1st embodiment.
Fig. 3 is the perspective view for indicating general waveguide structure.
Fig. 4 A is an example in the choke coil portion in order to illustrate present embodiment, from transverse direction in the case where rotation day
The schematic diagram of line.
Fig. 4 B is another example in the choke coil portion in order to illustrate present embodiment, from transverse direction in the case where rotation
The schematic diagram of antenna.
Fig. 4 C is another example in the choke coil portion in order to illustrate present embodiment, from the rotation day in the case where back side
The schematic diagram of line.
Fig. 4 D be the rotable antenna shown in Fig. 4 C transverse direction from the case where schematic diagram.
Fig. 5 A is periodically to be provided with groove gap (Slit) at regular intervals in flange part entirety in the 1st embodiment
In the case where flange part periphery distribution of impedance analysis diagram.
Fig. 5 B is the flange part indicated in the case where flange part is periodically provided with groove gap at regular intervals on the whole
The figure in the Low ESR region on periphery.
Fig. 5 C is to indicate the only flange in the case where being periodically provided with groove gap at regular intervals on side wall surface 110b
The figure in the Low ESR region on portion periphery.
Fig. 6 is the top view for the rotable antenna being illustrated for the function of the flange part to the 1st embodiment.
Fig. 7 A is intended to indicate that the figure of the width of waveguide structure and the definition of length.
Fig. 7 B is the figure for indicating the flowing of the microwave energy in the case where making the length of waveguide structure be greater than width.
Fig. 7 C is the figure for indicating the flowing of microwave energy of the length of waveguide structure with width in the case where roughly equal.
Fig. 8 is the block diagram comprising front section view of the microwave heating equipment of the 2nd embodiment.
Fig. 9 is the overhead sectional view viewed from above of the microwave heating equipment of the 2nd embodiment.
Figure 10 is the overhead sectional view viewed from above of the microwave heating equipment of the variation of the 2nd embodiment.
Figure 11 A is indicated in choke coil not set on flange part portion and in the case where be not provided with opening portion in top surface
Heating Experiment result figure.
Figure 11 B is indicated in the case where being provided with choke coil portion on flange part and top surface being provided with opening portion
The figure of the result of Heating Experiment.
Figure 12 A is the figure for indicating an example of shape of circularly polarized wave openings.
Figure 12 B is the figure for indicating an example of shape of circularly polarized wave openings.
Figure 12 C is the figure for indicating an example of shape of circularly polarized wave openings.
Figure 12 D is the figure for indicating an example of shape of circularly polarized wave openings.
Figure 12 E is the figure for indicating an example of shape of circularly polarized wave openings.
Figure 12 F is the figure for indicating an example of shape of circularly polarized wave openings.
Figure 13 is the block diagram comprising front section view of the microwave heating equipment of the 3rd embodiment.
Figure 14 is the overhead sectional view viewed from above of the microwave heating equipment of the 3rd embodiment.
Figure 15 A is the top view and side view for the structure for illustrating the rotable antenna of the 3rd embodiment.
Figure 15 B is the figure for illustrating the principle of leakage inhibition of the choke coil portion to the microwave for impinging perpendicularly on flange part.
Figure 15 C is the principle inhibited for illustrating choke coil portion to the leakage for the microwave for being slightly sideling incident on flange part
Figure.
Figure 15 D is the figure for illustrating principle that the microwave for being sideling incident on flange part is leaked from choke coil portion.
Figure 16 A is the figure for the movement for illustrating the microwave of leakage.
Figure 16 B is the figure for the effect for illustrating the resonant structure of the 3rd embodiment.
Figure 16 C is the figure structurally and functionally for the resonant structure for illustrating a variation of the 3rd embodiment.
Figure 17 A is top view and the side view of the structure for the rotable antenna for illustrating another variation of the 3rd embodiment
Figure.
Figure 17 B is the figure for illustrating principle that the microwave for being sideling incident on flange part is leaked from choke coil portion.
Figure 17 C is the figure structurally and functionally for illustrating the resonant structure of the 3rd embodiment.
Figure 17 D is the figure for illustrating the leakage microwave rectification function of the resonant structure with groove gap of the 3rd embodiment.
Figure 18 A is the front section view of existing microwave heating equipment described in patent document 1.
Figure 18 B is the top view of existing rotable antenna described in patent document 1.
Figure 19 A is the top view for indicating existing rotable antenna described in patent document 2.
Figure 19 B is the top view for indicating existing others rotable antenna described in patent document 2.
Specific embodiment
The microwave heating equipment of 1st aspect of the disclosure includes the heating room of storage heating object；Generate the microwave of microwave
Generating unit；Rotable antenna with waveguide structure；The driving portion for rotating rotable antenna；And to microwave generating unit and driving
The control unit that portion is controlled.
Rotable antenna include constitute waveguide structure top surface and side wall surface and by microwave to heating the micro- of indoor radiation
Wave radioactive department.Rotable antenna also has flange part, and the flange part is with and encirclement side wall surface opposed with an indoor wall surface is heated
Mode be set on the edge of side wall surface.Flange part has the choke coil portion inhibited to the leakage of microwave.
According to present aspect, the region with relatively low impedance can be generated in a manner of the edge for surrounding side wall surface.
Thereby, it is possible to strengthen the directive property of the leakage rejection in choke coil portion and microwave radiation.As a result, the food held in disk
In the case that a part of product has the food for being not intended to heating, have higher leakage rejection, wishes to heat to existing
Food region concentrate carry out microwave heating, can hardly to be not intended to heating food heat.
The disclosure the 2nd aspect microwave heating equipment the 1st aspect in, flange part and heat room wall surface between
Gap is configured to different according to position.
According to present aspect, the choke coil portion that can will be provided with high leakage rejection is formed on flange part.
The microwave heating equipment of 3rd aspect of the disclosure is made up of in the 1st aspect the groove gap being formed on flange part
Choke coil portion.
According to present aspect, the choke coil portion that can will be provided with high leakage rejection is formed on flange part.
In in terms of any one of the microwave heating equipment of 4th aspect of the disclosure in the 1st to the 3rd aspect, choke coil
Portion is periodically configured on flange part.
According to present aspect, the choke coil portion that can will be provided with high leakage rejection is formed on flange part.
In in terms of any one of the microwave heating equipment of 5th aspect of the disclosure in the 1st to the 4th aspect, from side wall
The length of the edge in face to the edge of flange part is configured to the substantial a quarter of the wavelength of microwave.
According to present aspect, it is possible to provide the basic leakage suppression in the choke coil portion that one kind can either ensure to be set on flange part
Performance processed, and it is able to suppress circular microwave heating equipment of the leakage electric field from each side wall surface.
In in terms of any one of the microwave heating equipment of 6th aspect of the disclosure in the 1st to the 4th aspect, also have
Axis is coupled, one end of the coupling axis is linked to top surface, and the other end is linked to driving portion.Top surface with connect coupling axis and microwave
Length on the direction of the centerline parallel of the waveguide structure in the center of radioactive department be configured to greater than top surface with center line
Length on vertical direction.
According to present aspect, leakage rejection can be strengthened, and by making the microwave not leaked towards target area, energy
Enough strengthen the directive property of microwave.
In in terms of any one of the microwave heating equipment of 7th aspect of the disclosure in the 1st to the 6th aspect, top surface tool
There is at least one opening portion.
According to present aspect, leakage rejection can be strengthened, and by making the microwave not leaked towards target area, energy
Enough strengthen the directive property of microwave radiation.
The microwave heating equipment of 8th aspect of the disclosure is in the 7th aspect, and rotable antenna also has coupling axis, the coupling
One end of axis is linked to top surface, and the other end is linked to driving portion.Opening portion is configured at from connection coupling axis and microwave radioactive department
The position that the center line of the waveguide structure in center deviates, and be configured to radiate circularly polarized wave from opening portion.
According to present aspect, the uniformity of the heating distribution on the periphery of opening portion can be improved.
In in terms of any one of the microwave heating equipment of 9th aspect of the disclosure in the 1st to the 8th aspect, with covering
The mode of flange part and side wall surface is provided with resonant structure, and is provided with the resonance surrounded by side wall surface, flange part and resonant structure
Space.According to present aspect, the leakage rejection in choke coil portion can be strengthened.
For the microwave heating equipment of 10th aspect of the disclosure in the 9th aspect, flange part constitutes a part of resonant structure.
According to present aspect, the choke coil portion of more compact (Compact) can be constituted, can prevent rotable antenna from becoming big
Type.
The microwave heating equipment of 11st aspect of the disclosure is formed in the 10th aspect in flange part and resonant structure both sides
Groove gap, the groove gap being formed on resonant structure and the groove gap for being formed in flange part are alternately arranged in a manner of nonoverlapping.
According to present aspect, the leakage rejection in choke coil portion can be strengthened.
Hereinafter, being illustrated referring to preferred embodiment of the attached drawing to the microwave heating equipment of the disclosure.In addition, below
In embodiment, it is illustrated by taking micro-wave oven as an example, and the microwave heating equipment of the disclosure is not limited to micro-wave oven, also comprising making
With the moisture garbage disposer of microwave heating, semiconductor manufacturing apparatus etc..
In addition, the present disclosure is not limited to the specific structure of the following embodiments and the accompanying drawings, the structure based on same technical idea
It is contained in the disclosure.
(the 1st embodiment)
Fig. 1 to Fig. 7 C is the figure being illustrated for the structure of the microwave heating equipment of the 1st embodiment to the disclosure.
Fig. 1 is the block diagram comprising front section view of the microwave heating equipment of present embodiment.Fig. 2 is the microwave heating of present embodiment
The overhead sectional view viewed from above of device.
As shown in Figure 1 and Figure 2, there is heating room 102, magnetron 103, waveguide as the micro-wave oven of microwave heating equipment 101
Pipe 104, rotable antenna 105a and mounting table 106.
Heat food (not shown) of the storage of room 102 as heating object.Magnetron 103 is the microwave generation for generating microwave
The typical example in portion.Waveguide 104 guides the microwave radiated from magnetron 103 to rotable antenna 105a.Rotable antenna 105a
The microwave propagated in waveguide 104 is radiated into heating room 102.Mounting table 106 is for loading food.
In the opening for the front surface for being set to heating room 102, door (not shown) is provided in a manner of it can be opened and closed.
In addition, in present embodiment, the open side for heating room 102 is defined as front, room 102 will be heated and opening phase
Anti- side is defined as rear, will be defined as right on the right side of from front towards rear therewith, left side is defined as left.
Entirety of the covering of mounting table 106 as the bottom surface 111 of a wall surface in heating room 102.Mounting table 106 will heat
The antenna storage space that space in room 102 is divided into the food storing space being positioned above and is disposed below.Due to from
Rotable antenna 105a radiated microwaves into heating room 102, therefore mounting table 106 is by being easy to through materials such as the glass of microwave or ceramics
Material is formed.
Rotable antenna 105a has the waveguide structure 108 of substantially box, which is constituted are as follows: is opened lower section
It puts and surrounds coupling axis 107.The lower end of coupling axis 107 is linked to the drive shaft of driving portion 114, and the upper end is linked to rotable antenna
105a。
Side of the rotable antenna 105a to radiate the microwave propagated in waveguide 104 and coupling axis 107 to target area
Formula is rotatably freely set to the lower section of bottom surface 111.
The wall surface for constituting waveguide structure 108 includes the top surface 109 for being linked to coupling axis 107 and the edge from top surface 109
Side wall surface 110a, side wall surface 110b, the side wall surface 110c for bending downwards and being formed.Hereinafter, by side wall surface 110a, 110b,
110c is referred to as side wall surface 110.Side wall surface 110 is configured to surround the surrounding tripartite of top surface 109.
Top surface 109 configures substantially in parallel with bottom surface 111.It is respectively arranged on the outside of side wall surface 110a, 110b, 110c
Flange part 112a, flange part 112b, flange part 112c.Hereinafter, they are referred to as flange part 112.
Flange part 112 separates small gap relative to bottom surface 111 and is formed parallel to.Flange part 112a, 112b,
Be respectively arranged on 112c the choke coil portion 117a that the microwave leakage of waveguide structure 108 is inhibited, choke coil portion 117b,
Choke coil portion 117c.Hereinafter, they are referred to as choke coil portion 117.
That is, flange part 112a waveguide structure 108 foreign side and on the direction perpendicular to side wall surface 110a from side wall
The lower edge of face 110a extends.Similarly, flange part 112b extends from the lower edge of side wall surface 110b, and flange part 112c is from side wall
The lower edge of face 110c extends.
Notch is respectively arranged between flange part 112b and 112c between flange part 112a and 112b.In other words, it revolves
Relay antenna 105a is not set between the flange part 112b and 112c between flange part 112a and 112b to link them
Flange.
A direction extensive open other than three directions covered by side wall surface, it is formed here to be used as microwave radioactive department
The flare 113 functioned.Rotable antenna 105a is from axis 107 is coupled towards radiated microwaves on the direction of flare 113.
In turn, the micro-wave oven 101 of present embodiment has carry out (not shown) to the motor for rotating rotable antenna 105a
The driving portion 114 of driving, the infrared sensor 115 and control unit 116 that the temperature of food is detected, the control unit root
According to the output signal of infrared sensor 115, the vibrational control and driving portion 114 for carrying out magnetron 103 are to rotable antenna 105a
Rotation control.
Waveguide structure 108 has approximately cuboid shape by top surface 109 and side wall surface 110, from coupling axis 107 to
The direction radiated microwaves of flare 113.Axis 107 is coupled as shown in Fig. 2, being configured at the approximate centre of bottom surface 111.
Here, in order to understand waveguide structure 108, general waveguide is illustrated using Fig. 3.
Fig. 3 is the perspective view for indicating most simple and general waveguide.As shown in figure 3, under normal circumstances, as rectangular wave
The rectangular shape of width 104a and height 104b that the waveguide 104 of conduit has section fixed, microwave is inside it along it
Length direction transmission.
If it is known by waveguide 104 be designed as making width 104a and height 104b within the limits prescribed, i.e. 0 > wide of λ
It spends 104a > λ 0/2 (wavelength that λ 0 is the microwave in free space), height 104b < λ 0/2, then microwave is in the inside of waveguide
It is propagated with TE10 mode.
TE10 mode refers to only having magnetic field components without electricity on the direction of propagation of microwave in waveguide 104
Ingredient, microwave as H wave or TE wave (Transverse electric wave: H mode) transfer mode.
Here, before the explanation to the wavelength in pipe λ g in waveguide 104, to the wavelength X 0 of the microwave in free space
It is illustrated.
In the case where the microwave of general micro-wave oven, it is known that the wavelength X 0 of the microwave in free space is about 120mm.
More accurately, wavelength X 0 is calculated by formula (1) according to the frequency f of the speed c of light and microwave.
[numerical expression 1]
λ 0=c/f ... (1)
Here, the speed c of light is 3.0 × 108[m/s], the frequency f of microwave is with the width of 2.4~2.5 [GHz] (ISM bands)
Degree generates variation.
The microwave that magnetron 103 is vibrated can make its frequency f generate variation according to loading condiction etc., therefore freely empty
In wavelength X 0 minimum 120 [mm] (the case where frequency of oscillation is 2.5GHz), being up to 125 [mm], (frequency of oscillation is
The case where 2.4GHz), variation is generated between them.
In view of the amplitude of fluctuation of the wavelength X 0 in free space, waveguide 104 is generally designed and sized to width mostly
Spend 104a be 80~100mm, the degree that height 104b is 15~40mm.Here, in Fig. 3, by vertical narrow face (Narrow
Width is greater than the level in narrow face by the meaning and the referred to as face E (E plain) 302 plain) based on the face for being parallel to electric field
Wide format (Wide plain) the referred to as face H (H plain) 301 based on the meaning that magnetic field is vortexed on its horizontal surface.
In addition, the wavelength in pipe λ g of wavelength when propagating in waveguide 104 as microwave can be indicated by formula (2).
[numerical expression 2]
λ g changes according to the width 104a of waveguide 104, but not related with the height 104b of waveguide 104.
Under TE10 mode, the both ends of the width direction of waveguide 104, i.e. electric field is zero on the face E 302, in the width direction of waveguide 104
Centre electric field be maximum.
As shown in Figure 1 and Figure 2, same idea can also be applied for the rotable antenna 105a of present embodiment.That is, this
In embodiment, top surface 109 and bottom surface 111 constitute the face H 301, and side wall surface 110a, 110c constitutes the face E 302.Side wall surface 110b is
Reflection end for being totally reflected microwave on the direction of flare 113.
The width 104a of the waveguide structure 108 of present embodiment is usually 80~100 [mm], is up to 120 [mm].
Hereinafter, being illustrated to the movement of the micro-wave oven 101 of present embodiment.In operation of the user to micro-wave oven 101
When portion (not shown) is operated, carried out the instruction that heating starts, magnetron 103 starts the output of microwave.From magnetron
103 microwave emits in heating room 102 via waveguide 104, coupling axis 107, rotable antenna 105a from flare 113.
Control unit 116 is according to the output signal from infrared sensor 115, to the mounting table 106 in heating room 102
The temperature of the heating object (not shown) of upper mounting is detected.Control unit 116 drives driving portion 114, to rotation day
The direction and rotation speed of line 105a is controlled.If purpose is only that heating object is heated to desired temperature, as above
It may achieve the purpose by above-mentioned basic structure, movement.
However, being contained with the food for being not intended to heating in a disk and wishing the food heated, only hope is heated
In the case that food heats, using the structure of flange part 112 and the choke coil portion 117 that is set on flange part 112 how to letting out
Leakage rejection strengthen critically important.
Hereinafter, in the present embodiment, being illustrated to the leakage rejection for how strengthening choke coil portion 117.
(1) method based on choke coil portion
Firstly, the intensifying method of the leakage rejection as choke coil portion 117, to based on flange part 112 and bottom surface 111
The method in gap and the method for the structure based on groove gap be illustrated.
The method that (1-a) is adjusted the gap of flange part and bottom surface
Here, illustrate to be adjusted the gap between flange part 112b and bottom surface 111 using Fig. 4 A to Fig. 4 D and carry out
Leakage rejection intensifying method.
The method being easiest to strengthened to leakage rejection is that flange part 112b is made to contact bottom surface 111, to eliminate
Gap between flange part 112b and bottom surface 111.
However, in this case, the function as rotating waveguide of rotable antenna 105a can be damaged.Then, it is adjusted to
So that the gap between flange part 112b and bottom surface 111 is different and different according to position, so that impedance changes according to position, from
And strengthen leakage rejection while maintaining rotation function.
Fig. 4 A be in order to an example in the choke coil portion to present embodiment is illustrated and from transverse direction in the case where
Rotable antenna 105a schematic diagram.
As shown in Figure 4 A, be provided on flange part 112b with leave side wall surface 110b and between bottom surface 111
The mode of gap turn narrow is relative to the inclined gap adjustment section 401 in bottom surface 111.According to this shape, with from side wall surface 110b
Side is towards the open end of flange part 112b and impedance becomes smaller.Therefore, can be constituted on flange part 112b leakage to microwave into
The choke coil portion 117b that row inhibits.
Similarly, it is provided with choke coil portion 117a on flange part 112a, choke coil portion 117c is provided on flange part 112c.
Fig. 4 B in order to illustrate the choke coil portion of present embodiment another example, from transverse direction in the case where rotation day
The schematic diagram of line 105a.
As shown in Figure 4 B, it is provided with gap adjustment section 402 on flange part 112b, which has from flange
The protrusion outstanding downwards portion 112b.According to this shape, the impedance at protrusion can be made to be greater than the impedance of the side side wall surface 110b
With the impedance at the open end of flange part 112b.
Therefore, the choke coil portion 117 inhibited to microwave leakage can be constituted on flange part 112b.In addition, flange
Impedance at the open end of portion 112b is set to be less than the impedance of the side side wall surface 110b.
It is formed in side wall surface 110 by this choke coil portion 117, to can either ensure the basic of choke coil portion 117
Leakage rejection, and be able to suppress leakage electric field from a side wall surface around to another side wall surface.In turn, by making not let out
The microwave of leakage is towards target area, so as to strengthen the directive property of the microwave radiation from rotable antenna 105a.
Similarly, it is provided with choke coil portion 117a on flange part 112a, choke coil portion 117c is provided on flange part 112c.
In the case where protrusion is arranged in flange part 112b, it is not necessary to be set to flange on the whole.Fig. 4 C is in order to illustrate this reality
Apply another example in the choke coil portion of mode and from the schematic diagram of the rotable antenna 105a in the case where back side.Fig. 4 D is from figure
Schematic diagram in the case where the front observation of rotable antenna 105a shown in 4C.
It, can be on flange part 112a, 112b, 112c, to be less than a quarter of oscillation wavelength as shown in Fig. 4 C, Fig. 4 D
Interval periodically configure columnar protrusion.
According to this structure, the leakage rejection in choke coil portion 117 is strengthened, and can makes to pass through choke coil
Portion 117 and the microwave that does not leak is radiated from flare 113.As a result, can strengthen from rotable antenna 105a to target area
Microwave radiation directive property.
According to this structure, by the way that gap adjustment section 401,402 is arranged, so as to constitute the gap between bottom surface 111
The flange part 112 different according to position.It is not intended to heat as a result, a part of the heating object held in disk exists
Food in the case where, to exist wish heat food region concentrate heating, can as far as possible not to be not intended to heating food
Product are heated.
The method that (1-b) utilizes groove gap structure
Here, using Fig. 5 A to Fig. 5 C on flange part 112 be arranged groove gap leakage rejection intensifying method into
Row explanation.
Fig. 5 A be indicate flange part 112 on the whole at regular intervals periodically be arranged groove gap in the case where,
The CAE parsing result of the distribution of impedance on the periphery of flange part 112.In the example shown in Fig. 5 A, the groove gap of width 5mm is with 26mm
Gap periods configuration.
Fig. 5 B is the flange part week indicated in the case where flange part entirety is periodically provided with groove gap at regular intervals
The figure in the Low ESR region on side.Fig. 5 C is the feelings for indicating only periodically to be provided with groove gap at regular intervals on side wall surface 110b
The figure in the Low ESR region on the flange part periphery under condition.
Compare Fig. 5 B and Fig. 5 C it is found that producing Low ESR region near side wall surface 110.That is, utilizing between fixed
Every choke coil portion 117 made of groove gap is periodically arranged, Low ESR region can be generated in a manner of surrounding side wall surface 110.
As a result, the leakage rejection in choke coil portion 117 can either be strengthened, and it can will pass through choke coil portion 117
And the microwave not leaked is radiated from flare 113, can strengthen the finger of the microwave radiation from rotable antenna 105a to target area
Tropism.
In addition, being formed in side wall surface 110 by choke coil portion 117, to can either ensure the basic of choke coil portion 117
Leakage rejection, and be able to suppress leakage electric field from a side wall surface around to another side wall surface.Therefore, can make not let out
The microwave of leakage can strengthen the directive property of the microwave radiation from rotable antenna 105a towards target area.
Here, it is preferred that so that the mode of the flowing of microwave will not be generated between groove gap, to be less than four points of the wavelength of microwave
One of interval form groove gap.
It can be generated on flange part 112 in a manner of surrounding side wall surface 110 according to this structure using choke coil portion 117
The relatively low region of impedance.Thereby, it is possible to strengthen leakage rejection, radiate the microwave not leaked from flare 113.
(2) intensifying method of the leakage rejection of the structure based on flange part
In the following, being illustrated using intensifying method of the Fig. 6 to the leakage rejection of the structure based on flange part 112.
Fig. 6 is the top view for the rotable antenna 105a being illustrated for the function of the flange part 112 to present embodiment.
As shown in fig. 6, inhibiting to strengthen to carry out leakage, need suitably to set in flange part 112 from side wall surface 110 to convex
The length of edge outer rim.In the present embodiment, which is set as to 1/the 4 of the wavelength of the microwave generated of magnetron 103
Length.
It can be produced on flange part 112 in a manner of surrounding side wall surface 110 according to this structure using choke coil portion 117
The relatively low region of raw impedance.Thereby, it is possible to strengthen leakage rejection, radiate the microwave not leaked from flare 113.
(3) leakage of the size based on waveguide structure inhibits intensifying method
Finally, using Fig. 7 A to Fig. 7 C to the intensifying method of the leakage rejection of the size based on waveguide structure 108
It is illustrated.
Fig. 7 A is intended to indicate that the figure of the width of waveguide structure and the definition of length.As shown in Figure 7 A, waveguide structure
108 are sufficiently above the shape of width 108a with length 108b.Here, length 108b is defined as, in top surface 109 with connect coupling
The direction parallel with center line (the hereinafter referred to as center line 118) of waveguide structure 108 in center of flare 113 of sympodium 107
On full-size.Width 108a is defined as, the full-size in top surface 109 on the direction vertical with center line 118.
The microwave that waveguide structure 108 is delivered to by coupling axis 107 reflects in side wall surface 110a, 110c and in wave
It advances in guide-tube structure 108.
Fig. 7 B, Fig. 7 C are the microwave energies for showing different two waveguide structures of the ratio between width 108a and length 108b
The CAE parsing result of flowing.As shown in Fig. 7 B, Fig. 7 C, length 108b is greater than width 108a can be in waveguide structure 108
The traveling wave advanced towards flare 113 is strengthened.
In this way, being greater than the structure of width 108a using length 108b, reinforce in waveguide structure 108 towards flare
113 traveling wave helps to mitigate the burden inhibited for the leakage of microwave.Therefore, this is for strengthening the microwave to target area
Radiation be effective.Leakage rejection can either be further increased as a result, and can be strengthened from rotable antenna 105a to mesh
Mark the radiation of the microwave in region.As a result, the radiation of the microwave to the direction for wishing to heat heating object can either be strengthened, again
The leakage rejection to the direction for being not intended to heating can be strengthened.
It can be generated on flange part 112 in a manner of surrounding side wall surface 110 according to this structure using choke coil portion 117
The relatively low region of impedance.Thereby, it is possible to strengthen leakage rejection, the microwave of the leakage will be prevented from flare 113
Radiation.
As described above, the rotable antenna 105a of present embodiment have waveguide structure 108, including with heating room 102 in
The opposed top surface 109 in bottom surface 111, perpendicular to the side wall surface 110 of top surface 109 and by microwave to the loudspeaker for heating indoor radiation
Portion 113.
Rotable antenna 105a also has flange part 112, and the flange part 112 is with and encirclement side wall surface 110 opposed with bottom surface 111
Mode be set to the edge of side wall surface 110.Flange part 112 has the choke coil portion 117 inhibited to the leakage of microwave.
According to the present embodiment, there is the case where food for being not intended to heating in a part of the heating object held in disk
Under, it, can be as far as possible not in the presence of the food for being not intended to heating to there is the region concentrated supply microwave for wishing the food heated
Region supplies microwave.As a result, concentrate heating to there is the region for wishing the food heated, can as far as possible not to being not intended to plus
The food of heat is heated.
(the 2nd embodiment)
Fig. 8 to Figure 11 B is illustrated for the structure of the microwave heating equipment of the 2nd embodiment to the disclosure
Figure.Fig. 8 is the block diagram comprising front section view of the microwave heating equipment of present embodiment.Fig. 9 is the microwave of present embodiment
The overhead sectional view viewed from above of heating device.
Hereinafter, being illustrated to its structure, movement, effect.In addition, in each attached drawing, to identical or right as the 1st embodiment
The position answered assigns same label, and their description is omitted sometimes.
The elemental motion of present embodiment is identical as the 1st embodiment.As shown in Figure 8, Figure 9, present embodiment and the 1st reality
Apply mode the difference is that, rotable antenna 105b on top surface 109 have opening portion 801.
Opening portion 801 is rectangle groove gap, be set to coupling axis 107 and flare 113 between top surface 109 on, with
The side of the central axis of the waveguide structure 108 in the center of connection coupling axis 107 and flare 113 upwardly extends.
Rotable antenna 105b has flange part 112 in the same manner as the rotable antenna 105a of the 1st embodiment, thus have with
1st embodiment similarly leaks rejection.Therefore, rotable antenna 105b can make not leak by flange part 112 micro-
Wave is not only radiated from flare 113, additionally it is possible to be radiated from opening portion 801.According to the present embodiment, can strengthen to target area
Microwave radiation directive property.
Figure 10 is the section plan viewed from above of the microwave heating equipment of modified embodiment of the present embodiment.Such as Figure 10
It is shown, in this structure, it is provided on the top surface of rotable antenna 105c 109 and generates circularly polarized wave (Rotation round
Polarization opening portion 1001).
Circularly polarized wave is the technology being widely used in the field of mobile communication and satellite communication, as use at one's side
Example, have vehicle by when collect automatically super expressway expense system so-called ETC (Electronic toll
Collection system: E-payment system) etc..
Circularly polarized wave is the polarization corrugated of the electric field microwave relative to the rotation of the direction of travel of electric wave at any time.Such as fruit shape
At circularly polarized wave, then the direction of electric field can persistently change together with the time, and electric field strength does not change over time.
Therefore, if circularly polarized wave is used for microwave heating, the existing microwave heating based on linearly polarized wave is compared
For, microwave is dispersed to wide range.As a result, microwave heating can equably be carried out to heating object.Particularly,
Uniformly heated tendency in the circumferential direction of circularly polarized wave is stronger.
In addition, circularly polarized wave is classified as right-handed polarized wave (Clockwise rotation according to direction of rotation
Round polarization) and left-hand polarized wave (Counterclockwise rotation round
Polarization), difference is not present in the aspect of performance of microwave heating.
As shown in Figure 10, opening portion 1001 includes two circularly polarized wave openings.Each circularly polarized wave openings have by straight
Crossed grooves (Cross slot) shape that two rectangle groove gaps that angle intersects are constituted.These circularly polarized wave openings are configured so that
Deviate from the center line 118 of waveguide structure 108 at respective center.
When microwave passes through opening portion 1001 as constructed as above, circularly polarized wave is generated.
It is obtained specifically, rotable antenna 105c is designed as follows.
The length of flange part 112 is 30mm.Choke coil portion 117 uses width for 5mm, is divided into the groove gap mode of 26mm.
The width of waveguide structure 108 is 80mm, length 110mm.Opening portion 1001 includes two circularly polarized waves for intersecting groove shape
Opening.Circularly polarized wave openings orthogonal two rectangle groove gap (length 45mm, width 10mm) configuration from coupling axis
107 towards the position of the upward out 35mm in the side of flare 113.
Here, the effect of rotable antenna 105c, effect are illustrated.
Figure 11 A, Figure 11 B indicate make rotable antenna towards left direction stop in the state of, on disk with equal uniform thickness
In the case where spending freezing pilau (Pilaf) the progress microwave heating held, thermoviewer (Thermo-viewer) is used to see
Heating distribution on the disk examined.
Figure 11 A be used in not set choke coil portion on flange part, on top surface the rotable antenna of not set opening portion feelings
Example under condition.Figure 11 B is the example in the case where using rotable antenna 105c shown in Fig. 10.In these figures, show compared with
The temperature of bright part is higher than the temperature compared with dark-part.
According to Figure 11 A, Figure 11 B it is found that the example of the latter, which is shown, focuses more on left direction compared to for the former example
Heating distribution.
As described above, according to the present embodiment, by the way that the microwave of circularly polarized wave to indoor radiation is heated, can be open
Portion is formed about uniform heating distribution.In addition, rotable antenna 105c is same as the rotable antenna 105a of the 1st embodiment to be had
Flange part 112, therefore have leakage rejection in a same manner as in the first embodiment.
Therefore, rotable antenna 105c can be such that the microwave not leaked by flange part 112 not only radiates from flare 113,
It can also be radiated from opening portion 1001.According to the present embodiment, the burden inhibited for the leakage of microwave can either be reduced, and can
Increase the radiation to the microwave of target area.
In addition, opening portion 1001 is not limited to shape shown in Fig. 10, such as shown in Figure 12 B to Figure 12 F citing, it can be using each
The shape of kind.
Figure 12 A to Figure 12 F is the figure for indicating an example of the shape of circularly polarized wave openings of opening portion 1001.
Circularly polarized wave openings shown in Figure 12 A are identical as structure shown in Fig. 10.Circularly polarized wave openings shown in Figure 12 B
In, two rectangle groove gaps are uncrossed, the shape of the T font with Roman character.In circularly polarized wave openings shown in Figure 12 C,
Two rectangle groove gaps are uncrossed, the shape of the L font with Roman character.
In circularly polarized wave openings shown in Figure 12 D, two shorter rectangle groove gaps have from a longer rectangle
The both ends of groove gap are nearby in the shape extended in vertical and different directions from each other with longer rectangle groove gap.
Circularly polarized wave openings shown in Figure 12 E are spaced apart with two rectangle groove gaps and constitute the shape of T font
Shape.Circularly polarized wave openings shown in Figure 12 F have by the cross of four rectangle groove gaps form right angle each other of equal length
Shape.
In addition, opening portion 801,1001 is set to the top surface 109 of rotable antenna 105b, 105c in present embodiment.However
It is without being limited thereto.Opening portion 801,1001 for example both can be set in the side wall surface 110 of rotable antenna 105b, 105c, furthermore
It can be set in the both sides of top surface 109 and side wall surface 110, can get same effect.
(the 3rd embodiment)
Figure 13 to Figure 17 D is illustrated for the structure of the microwave heating equipment of the 3rd embodiment to the disclosure
Figure.Figure 13 is the block diagram comprising front section view of the microwave heating equipment of present embodiment.Figure 14 is the micro- of present embodiment
The overhead sectional view viewed from above of Wave heating device.
Hereinafter, being illustrated to its structure, movement, effect.In addition, implementing in the various figures to the 1st embodiment and the 2nd
The identical or corresponding position of mode assigns same label, and their description is omitted sometimes.
The basic movement of present embodiment is identical as the 1st and the 2nd embodiment.As shown in figs. 13 and 14, this embodiment party
Formula and the 1st and the 2nd embodiment the difference is that, rotable antenna 105d has resonant structure 1501.
As shown in figs. 13 and 14, resonant structure 1501 is arranged to cover side wall surface 110b and flange part 112b.Side wall surface
110b and flange part 112b as resonant structure 1501 a part and constitute resonant structure 1501.According to this structure, it is arranged by side
The resonance space that wall surface 110, flange part 112 and resonant structure 1501 surround.
According to the present embodiment, resonant structure 1501 is by the microwave containment slightly leaked out from choke coil portion 117 in resonance space
It is interior, to prevent leakage of the microwave to outside resonant structure 1501.That is, resonant structure 1501 is played as the strengthening part in choke coil portion 117
Function.
In present embodiment, resonant structure 1501 is provided on the outside of side wall surface 110b and flange part 112b.However, comprising
The choke coil portion of resonant structure 1501 is integrally formed more compact.As a result, can prevent rotable antenna from becoming large-scale.
Hereinafter, being illustrated referring to attached drawing to the movement and effect of the resonant structure of present embodiment.
Figure 15 A is the top view and side view for the structure for illustrating the rotable antenna 105d of present embodiment.Figure 15 B is
For illustrate choke coil portion 117b for impinge perpendicularly on flange part 112b microwave leakage inhibit principle figure.
Figure 15 C is to press down for illustrating choke coil portion 117b for being slightly sideling incident on the leakage of the microwave of flange part 112b
The figure of the principle of system.Figure 15 D is for illustrating that more oblique incidence is leaked to the microwave of flange part 112b from choke coil portion 117
The figure of principle.
As shown in fig. 15, on flange part 112b in a same manner as in the first embodiment, micro- according to being generated by magnetron 103
1/4th interval of the wavelength of wave and be formed with groove gap, to constitute choke coil portion 117b.Choke coil portion 117b utilizes this
Structure is inhibited (5B referring to Fig.1) to the leakage for the microwave for impinging perpendicularly on flange part 112b.
In addition, choke coil portion 117b, which has, will be intended to be adjusted to real to the microwave that tilted direction leaks relative to flange part 112b
The effect in the vertical direction of matter.As shown in figure 15 c, using Vector modulation, it is intended to the microwave (dotted line in figure) leaked to tilted direction
It is adjusted to impinge perpendicularly on the microwave (solid line in figure) of flange part 112.
By this effect, choke coil portion 117b can with Figure 15 B the case where in the same manner as the leakage of microwave is inhibited.
Hereinafter, this effect is referred to as the corrective action based on groove gap to the leakage direction of microwave.
However, as shown in figure 15d, the microwave in the length of flange part 112 and the corner for being sideling incident on flange part 112 not phase
It accords with, therefore the leakage of this microwave can not be inhibited in flange part 112.
Figure 16 A is the figure being illustrated for the movement of the microwave to leakage.In Figure 16 A, solid arrow indicate electric field and
Its direction, dotted arrow indicate microwave and its direction.As shown in Figure 16 A, a little leakage of microwave becomes flange part 112b's
Outside generates the reason of electric field, and becomes the reason of carelessly heating to the food being present near the electric field.
Figure 16 B is the figure being illustrated for the effect of the resonant structure 1501 to present embodiment.In Figure 16 B, solid line arrow
Head indicates electric field and its direction, and dotted arrow indicates microwave and its direction.As shown in fig 16b, the resonant structure of present embodiment
1501 are arranged to cover flange part 112b and side wall surface 110b.A part of flange part 112b composition resonant structure 1501.
In present embodiment, the length of flange part 112 is 1/the 4 of the wavelength of microwave, therefore from the place in Figure 16 B
1801 via place 1802 and the length in the path of place of arrival 1803 be microwave wavelength 1/1.
According to the present embodiment, the microwave of leakage becomes the node by place 1801 as amplitude, by 1802 conduct of place
The antinode of amplitude, and the stable standing wave by place 1803 as the node of amplitude.That is, by flange part 112b, side wall surface 110b
The space surrounded with resonant structure 1501 is functioned as by the microwave containment leaked in resonance space therein.Its result
It is that resonant structure 1501 plays high leakage rejection.
Figure 16 C is structurally and functionally being illustrated for the resonant structure 1502 for a variation to present embodiment
Figure.In Figure 16 C, solid arrow indicates electric field and its direction, and dotted arrow indicates microwave and its direction.
In Figure 16 C, in the same manner as Figure 16 B, from place 1801 via place 1802 and the path of place of arrival 1803
Length is the 1/1 of the wavelength of microwave.From place 1801 via place 1802 length in the path of place of arrival 1804
Degree is also the 1/1 of the wavelength of microwave, which also functions as resonance space.That is, resonant structure 1502 has tool
The structure of standby multiple resonance spaces.According to this structure, leakage rejection can be strengthened.
Figure 17 A is bowing of being illustrated of the structure of the rotable antenna 105e for another variation to present embodiment
View and side view.Figure 17 B is figure identical with Figure 15 D, is for being sideling incident on the microwave of flange part 112b from chokes
The figure that the principle of circle portion 117b leakage is illustrated.Figure 17 C, Figure 17 D are for another variation to present embodiment
The figure that the effect of resonant structure 1503 is illustrated.
As shown in Figure 17 A, resonant structure 1503 is set on rotable antenna 105e, and is had in the same manner as flange part 112b
The groove gap being arranged at regular intervals.Each groove gap of resonant structure 1503 with not with each groove gap of flange part 112b be overlapped side respectively
Formula is configured between two groove gaps of flange part 112b.
As seen in this fig. 17b, resonant structure 1503 receives the microwave leaked from choke coil portion 117b.In addition to this, it is set to humorous
Groove gap in vibration portion 1503 plays the corrective action (7D referring to Fig.1) in the leakage direction of above-mentioned microwave.As a result, choke coil
Portion 117b can inhibit the leakage for the microwave being adjusted.According to this structure, leakage rejection can be strengthened.
As described above, according to this modification, foring groove gap in the both sides of flange part 112 and resonant structure 1503, being formed in
Groove gap on resonant structure 1503 is alternately arranged in a manner of nonoverlapping with the groove gap being formed on flange part 112b.As a result,
Leakage rejection can be strengthened.
In addition, in the present embodiment, resonant structure 1501,1502,1503 is only arranged on flange part 112b.However, such as
Same resonant structure is also provided on flange part 112a, 112c by fruit, then can further strengthen leakage rejection.
The reason of illustrated structure being only arranged on flange part 112b, is that flange part 112b is closest to couple axis
107, therefore be easy to generate the leakage of microwave from the side flange part 112b.
The groove gap being arranged on flange part 112b and resonant structure 1503 is provided so that leaked microwave will not be oblique
Side travels upwardly.Therefore, it is necessary to the interval of groove gap is set as 1/4th of the wavelength at least below microwave.
In turn, in above embodiment, rotable antenna 105a~105e is set to the lower section of bottom surface 111.However, rotation day
Line 105a~105e is configured to opposed with the heating top surface of room 102 in the adjacent top surface of another wall surface as heating room 102
In the case where setting, same effect can be also obtained.
Industrial availability
Such as details described above, the microwave heating equipment of the disclosure can be used in carrying out the heating of food, sterilization
Deng microwave heating equipment etc..
Label declaration
1a, 1b, 1c, 105a, 105b, 105c, 105d, 105e rotable antenna
2a, 2b, 2c, 107 couple axis
3a, 3b, 3c, 108 waveguide structure
The top surface 4a, 4b, 4c, 109
5aa, 5ab, 5ac, 5ba, 5bb, 5bc, 5ca, 5cb, 5cc, 110,110a, 110b, 110c side wall surface
6,111 bottom surfaces
7a, 7b, 7c, 112,112a, 112b, 112c flange part
8a, 8b, 8c, 113 flare
101 micro-wave ovens
102 heating rooms
103 magnetrons
104 waveguides
104a, 108a width
104b height
106 mounting tables
108b length
114 driving portions
115 infrared sensors
116 control units
117,117a, 117b, 117c choke coil portion
118 center lines
301 faces H
302 faces E
401,402 gap adjustment sections
801,1001 opening portions
1501,1502,1503 resonant structures
1801,1802,1803,1804 places
Claims (10)
1. a kind of microwave heating equipment, which is included
Room is heated, heating object is stored；
Microwave generating unit generates microwave；
Rotable antenna comprising microwave radioactive department and top surface and the side wall surface for constituting waveguide structure, by the microwave from institute
Microwave radioactive department is stated to the indoor radiation of the heating；
Driving portion rotates the rotable antenna；And
Control unit controls the microwave generating unit and the driving portion,
The rotable antenna also has flange part, and the flange part is described in the opposed and encirclement with the indoor wall surface of heating
The mode of side wall surface is set to the edge of the side wall surface,
The flange part has the choke coil portion inhibited to the leakage of the microwave,
By the groove gap formed on the flange part, the choke coil portion is constituted on the flange part.
2. microwave heating equipment according to claim 1, wherein
The choke coil portion is periodically configured on the flange part.
3. microwave heating equipment according to claim 1, wherein
Length from the edge of the side wall surface to the edge of the flange part is substantial four points of the wavelength of the microwave
One of.
4. microwave heating equipment according to claim 1, wherein
The rotable antenna also has coupling axis, and one end of the coupling axis is linked to the top surface, and the other end is linked to the drive
Dynamic portion,
The top surface with connect it is described coupling axis and the microwave radioactive department center the waveguide structure center
Length on the parallel direction of line is configured to the length on the direction with the central axis greater than the top surface.
5. microwave heating equipment according to claim 1, wherein
The top surface has at least one opening portion.
6. microwave heating equipment according to claim 5, wherein
The rotable antenna also has coupling axis, and one end of the coupling axis is linked to the top surface, and the other end is linked to the drive
Dynamic portion,
The opening portion is configured at from the waveguide structure in the center for connecting the coupling axis and the microwave radioactive department
The position that center line deviates, and be configured to radiate circularly polarized wave from the opening portion.
7. a kind of microwave heating equipment, which is included
Room is heated, heating object is stored；
Microwave generating unit generates microwave；
Rotable antenna comprising microwave radioactive department and top surface and the side wall surface for constituting waveguide structure, by the microwave from institute
Microwave radioactive department is stated to the indoor radiation of the heating；
Driving portion rotates the rotable antenna；And
Control unit controls the microwave generating unit and the driving portion,
The rotable antenna also has flange part, and the flange part is described in the opposed and encirclement with the indoor wall surface of heating
The mode of side wall surface is set to the edge of the side wall surface,
The flange part has the choke coil portion inhibited to the leakage of the microwave,
Gap between the flange part and the wall surface is configured to different according to position, to constitute on the flange part
The choke coil portion.
8. a kind of microwave heating equipment, which is included
Room is heated, heating object is stored；
Microwave generating unit generates microwave；
Rotable antenna comprising microwave radioactive department and top surface and the side wall surface for constituting waveguide structure, by the microwave from institute
Microwave radioactive department is stated to the indoor radiation of the heating；
Driving portion rotates the rotable antenna；And
Control unit controls the microwave generating unit and the driving portion,
The rotable antenna also has flange part, and the flange part is described in the opposed and encirclement with the indoor wall surface of heating
The mode of side wall surface is set to the edge of the side wall surface,
The flange part has the choke coil portion inhibited to the leakage of the microwave,
It is provided with resonant structure in a manner of covering the flange part and the side wall surface, and is provided with by the side wall surface, institute
State the resonance space that flange part and the resonant structure surround.
9. microwave heating equipment according to claim 8, wherein
The flange part constitutes a part of the resonant structure.
10. microwave heating equipment according to claim 8, wherein
It is formed with groove gap in the flange part and the resonant structure both sides, the groove gap being formed on the resonant structure and is formed in institute
The groove gap stated on flange part is alternately arranged in a manner of nonoverlapping.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-142315 | 2014-07-10 | ||
| JP2014142315 | 2014-07-10 | ||
| JP2015-101855 | 2015-05-19 | ||
| JP2015101855 | 2015-05-19 | ||
| PCT/JP2015/003459 WO2016006249A1 (en) | 2014-07-10 | 2015-07-09 | Microwave heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106465490A CN106465490A (en) | 2017-02-22 |
| CN106465490B true CN106465490B (en) | 2019-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580024430.XA Active CN106465490B (en) | 2014-07-10 | 2015-07-09 | Microwave heating equipment |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11153943B2 (en) |
| JP (1) | JP6528088B2 (en) |
| CN (1) | CN106465490B (en) |
| DE (1) | DE112015003208T5 (en) |
| WO (1) | WO2016006249A1 (en) |
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| TR201612497A1 (en) * | 2016-09-02 | 2018-03-21 | Arcelik As | A MICROWAVE OVEN WITH MODE MIXER |
| US10383183B2 (en) * | 2016-12-05 | 2019-08-13 | Hall Labs Llc | Microwave oven with oscillating magnetron |
| WO2019201616A1 (en) | 2018-04-20 | 2019-10-24 | BSH Hausgeräte GmbH | Rotating microwave antenna for a domestic microwave device, and domestic microwave device |
| CN111052862B (en) * | 2018-04-20 | 2022-05-10 | 松下知识产权经营株式会社 | Microwave heating device |
| TWI694746B (en) * | 2018-11-19 | 2020-05-21 | 財團法人工業技術研究院 | Microwave heating device |
| JP7154393B2 (en) * | 2019-04-12 | 2022-10-17 | 三菱電機株式会社 | heating device |
| CN115665914B (en) * | 2022-12-22 | 2023-03-10 | 河北科技大学 | Multi-source microwave heating device |
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-
2015
- 2015-07-09 US US15/300,719 patent/US11153943B2/en active Active
- 2015-07-09 CN CN201580024430.XA patent/CN106465490B/en active Active
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| JPWO2016006249A1 (en) | 2017-04-27 |
| CN106465490A (en) | 2017-02-22 |
| WO2016006249A1 (en) | 2016-01-14 |
| US11153943B2 (en) | 2021-10-19 |
| DE112015003208T5 (en) | 2017-03-30 |
| US20170171922A1 (en) | 2017-06-15 |
| JP6528088B2 (en) | 2019-06-12 |
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